best military branch for engineering--military pays for college

Magical Allotments to include:
Basic Allowance for Substance (BAS): $300 a month for groceries
Basic Allowance for Housing (BAH): $900-1200 a month for rent/mortgage (varies w/ area)
Cost of Living Allowance (COLA): $200-400 a month cost of living adjustment for personnel living overseas (as things just cost more over there)
Specialty Pay: $50-100 a month for additional special training (Paratrooper, Drill Sergeant, Recruiter etc...)

There are more, but those are the most common.